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In Situ Observations Reveal How Spectral Reflectance Responds to Growing Season Phenology of an Open Evergreen Forest in Alaska

Hideki Kobayashi, Shin Nagai, Yongwon Kim, Wei Yang, Kyoko Ikeda, Hiroki Ikawa, Hirohiko Nagano, Rikie Suzuki
2018 Remote Sensing  
Current efforts for the in situ reflectance measurements are not enough to obtain the exact interpretation of how seasonal spectral signature responds to phenological stages in boreal evergreen needleleaf  ...  This study shows the first in situ continuous measurements of canopy scale (overstory + understory) and understory spectral reflectance and vegetation index in an open boreal forest in interior Alaska.  ...  The objectives of this study were to understand how spectral reflectance responds to growing season phenology.  ... 
doi:10.3390/rs10071071 fatcat:2vsu5wdoj5aqvpv5uhachnbl3a

Circumpolar vegetation dynamics product for global change study

Alemu Gonsamo, Jing M. Chen
2016 Remote Sensing of Environment  
Land surface phenology (LSP) and vegetation growth of the circumpolar north are changing in response to more pronounced warming in the region.  ...  We here introduce the first phenology index (PI) based vegetation dynamics product, comprising start (SOS), end (EOS), length of growing season (LOS), and growing season integrated annual normalized difference  ...  We are grateful to the FLUXNET network, the site principal investigators, co-investigators, data collection and processing staff, and the agencies and institutions that  ... 
doi:10.1016/j.rse.2016.04.022 fatcat:cejovxroi5gjdccihrhmx2wvmq

Changes in surface albedo after fire in boreal forest ecosystems of interior Alaska assessed using MODIS satellite observations

Evan A. Lyons, Yufang Jin, James T. Randerson
2008 Journal of Geophysical Research  
Randerson (2008), Changes in surface albedo after fire in boreal forest ecosystems of interior Alaska assessed using MODIS satellite observations,  ...  Albedo during early spring had a mean of 0.50 ± 0.03 for the first three decades after fire, substantially higher than that observed in evergreen conifer forests (0.34 ± 0.04).  ...  This work was supported by a NASA grant to J. Randerson (NNG04GK49G).  ... 
doi:10.1029/2007jg000606 fatcat:tks6jngnnfbxtd5nlhr6oe4tji

Heterogeneous spring phenology shifts affected by climate: supportive evidence from two remotely sensed vegetation indices

Xiyan Xu, William J Riley, Charles Koven, Gensuo Jia
2019 Environmental Research Communications  
Assessing the spatial heterogeneity of SG trends associated with different satellites is essential for robustly interpreting phenological dynamics and their responses to climate.  ...  The increased SG-temperature sensitivity is associated with increased precipitation during the spring season, which regulated the sensitivity of SG to spring temperature.  ...  contract DE-AC02-05CH11231 to Lawrence Berkeley National Laboratory.  ... 
doi:10.1088/2515-7620/ab3d79 fatcat:6c5azzrptfacfm7gfrb54whnoq

Assessment of Vegetation Trends in Drylands from Time Series of Earth Observation Data [chapter]

Rasmus Fensholt, Stephanie Horion, Torbern Tagesson, Andrea Ehammer, Kenneth Grogan, Feng Tian, Silvia Huber, Jan Verbesselt, Stephen D. Prince, Compton J. Tucker, Kjeld Rasmussen
2015 Remote Sensing Time Series  
Ministry of Education and Research (BMBF) in the frame of the funding measure "Sustainable Land Management".  ...  Gessner for discussion of the manuscript. Furthermore, we are grateful to two anonymous reviewers for their valuable comments. Further thanks go to P.  ...  changing; and how does vegetation respond to climate change?  ... 
doi:10.1007/978-3-319-15967-6_8 fatcat:2cl5kwf33zg7hl2k3syukjpa6q

Temperature and Snow-Mediated Moisture Controls of Summer Photosynthetic Activity in Northern Terrestrial Ecosystems between 1982 and 2011

Jonathan Barichivich, Keith Briffa, Ranga Myneni, Gerard Schrier, Wouter Dorigo, Compton Tucker, Timothy Osborn, Thomas Melvin
2014 Remote Sensing  
Here we use recently developed gridded datasets of moisture variability to investigate the links between warming and changes in available soil moisture and summer vegetation photosynthetic activity at  ...  Establishing the connections between warming and drought stress has been difficult because soil moisture observations are scarce.  ...  Vegetation in this region varies from dense evergreen needleleaf forests in the central boreal region to sparsely forested woody savanna and open shrublands toward the north (Figure 5b ).  ... 
doi:10.3390/rs6021390 fatcat:rsls53nzq5bl3dvn4pjj5olvgi

Crossing the Great Divide: Bridging the Researcher–Practitioner Gap to Maximize the Utility of Remote Sensing for Invasive Species Monitoring and Management

Kelsey Parker, Arthur Elmes, Peter Boucher, Richard A. Hallett, John E. Thompson, Zachary Simek, Justin Bowers, Andrew B. Reinmann
2021 Remote Sensing  
Invasive species are increasingly present in our ecosystems and pose a threat to the health of forest ecosystems.  ...  We also draw from our experiences collaborating with each other to advance detection, monitoring, and management of the Hemlock Woolly Adelgid (Adelges tsugae; HWA), an invasive forest pest in the eastern  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/rs13204142 fatcat:zi7typvwmbdxdljwcfyftlzrgm

The AmeriFlux network: A coalition of the willing

K.A. Novick, J.A. Biederman, A.R. Desai, M.E. Litvak, D.J.P. Moore, R.L. Scott, M.S. Torn
2018 Agricultural and Forest Meteorology  
98 network, in the context of the attributes of the other networks.  ...  Finally, in Section 5, we review some of the challenges associated with AmeriFlux's approach 111 to network activity, and highlight ways in which those challenges can be overcome through synergies 112  ...  of low forest albedo in wintertime when open areas are 402 snow-covered.  ... 
doi:10.1016/j.agrformet.2017.10.009 fatcat:3y5oaptpbjbgzonhj2fqxmsh6m

Drones for Biodiversity Conservation and Ecological Monitoring

Kristy Zhang
2019 Figshare  
We are also immensely grateful to Alexander Trichtchenko and Fuqun Zhou for their comments on an earlier version of the manuscript.  ...  The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, and in the decision to publish the results.  ...  It responds to leave senescence of deciduous forests in a parallel way to that of NDVI [37] and hence could be useful for discriminating senescent leaves from green needles.  ... 
doi:10.6084/m9.figshare.11322092.v1 fatcat:lzjshsnscnb2pnnn6j4k5vfejy

Disturbance regimes, gap-demanding trees and seed mass related to tree height in warm temperate rain forests worldwide

Peter J. Grubb, Peter J. Bellingham, Takashi S. Kohyama, Frida I. Piper, Alfredo Valido
2013 Biological Reviews  
As emphasized by Veblen & Ashton (1978), such species must combine ease of dispersal with an ability to grow in the open on a slender nutrient supply.  ...  The soil seed bank in a kauri (Agathis australis) forest remnant near Auckland, New Zealand. New Zealand Journal of Botany 26, 223-236 canopy openness in an evergreen broad-leaved forest.  ... 
doi:10.1111/brv.12029 pmid:23506298 fatcat:jyuv6gruizel3cywely54molby

Conference program and abstracts. International Biogeography Society 6th Biennial Meeting – 9-13 January 2013, Miami, Florida, USA

Joaquín Hortal, Karen Faller, Kenneth Feeley, Richard Field, Catherine Graham, François Guilhaumon, Daniel Gavin
2012 Frontiers of Biogeography  
The geography of divergence and disparity: how landscapes help understand the decoupling of genetic structure and phenotypic diversity. 43A Assembly of plant communities in climate space Benjamin Blonder  ...  The data reveal both similarities and differences in how the flora relates to soil gradients in the two major regions, and additional patterns related to climatic heterogeneity within the rain forest realm  ...  Keywords: dispersal type, forest phylogenetics, leaf phenology, precipitation, seed size When and how do species achieve niche stability over long time scales? Alycia L.  ... 
doi:10.21425/f5fbg15702 fatcat:lwyauz5kbvcwbmimvei4iota3a

An overview of MATISSE-v2.0

Luc Labarre, Karine Caillault, Sandrine Fauqueux, Claire Malherbe, Antoine Roblin, Bernard Rosier, Pierre Simoneau, Karin Stein, John D. Gonglewski
2010 Optics in Atmospheric Propagation and Adaptive Systems XIII  
This Programme is based on commitments received up to the time of publication and is subject to change without notice.  ...  SPIE would like to express its deepest appreciation to the symposium chairs, conference chairs, Programme committees, and session chairs who have so generously given of their time and advice to make this  ...  Acknowledgement: Thanks to Total E&P Norge AS for funding this study, thanks to NOFO for letting us participate in the exercise, and thanks to KSAT, InfoTerra and The Norwegian Meteorological Institute  ... 
doi:10.1117/12.868183 fatcat:5anlqspzzzcftfufaxvlr45zve

Volume 54, Number 3 (May 2001)

Editorial Board
2001 Journal of range management  
299 Forage kochia seed germination response to storage time and temperature by  ...  ., or the authors and does not imply its approval to the exclusion of other products that may also be suitable.  ...  Mention of a proprietary product does not constitute a guarantee or warranty of the product by USDA, Montana Agric. Exp.  ... 
doi:10.2458/azu_jrm_v54i3_board fatcat:biqhtsdynjfhtlfy7q6t4f2ydm

State of the Climate in 2014

Jessica Blunden, Derek S. Arndt
2015 Bulletin of The American Meteorological Society - (BAMS)  
The largest positive annual anomalies were over Botswana, northeastern China, boreal evergreen forest of Russia, and western Europe.  ...  A growing understanding of Arctic surface longwave radiation related to clouds reveals a two-state system (e.g., Stramler et al. 2011 ; Fig. SB5 .1).  ... 
doi:10.1175/2015bamsstateoftheclimate.1 fatcat:fybwwokhwjaplf3dn7oow64hju

Environmental effects of ozone depletion: 1998 assessment

J.C. van der Leun, X. Tang, M. Tevini
1998 Journal of Photochemistry and Photobiology. B: Biology  
Department of the Environment kindly supported the participation of T.V.C.  ...  Acknowledgments We wish to thank Dr. D. Gwynn-Jones for helpful input and we are grateful to him, Dr. S. Moody, Dr. N. Paul, Dr. U. Johanson, Dr. Solheim, Dr. C. Gehrke, Dr. C. Suttle, Dr. D.  ...  If this phenomenon is widespread, this would amplify otherwise subtle responses to UV-B seen in a single growing season, for example in forest trees.  ... 
doi:10.1016/s1011-1344(98)00195-x fatcat:4ljch4bwozf5pddoph6u2b4w5u
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